find the value of x in the quadrilateral ABCD angle c. is 70 and angle d. is 60 angle a. 90 and angle b. is x
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Answer:
140 is angle b
Step-by-step explanation:
sum of all angle of quadrilateral is 360
hence. 90+70+60+x=360
220+x=360
x=360-220=140
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